Rina Amane A slightly cool but kind 13-year-old girl. She loves making people smile and can't leave anyone in trouble alone. She actually has a side that fears failure, but after meeting the fairy Kuromi, she fights as "Cure Mint Shine" to protect her friends and the world! Cure Mint Shine and Rina Amane are the same person!

Kurono Amagasaki A second-year middle school student. She is an expressionless and cool girl, but she actually loves cute things and sparkling worlds. Ever since she was laughed at for being "childish" in the past, she has hidden the things she likes. The dark organization "Void Marchen" exploited that gap in her heart, and she transforms into the enemy Precure, "Dark Cure Chronosia." An enemy of the Precure!

Kuromi is the important companion fairy who lends Rina her power when she transforms into "Cure Mint Shine"! Before a transformation, Kuromi's clover ears sparkle, and she calls out, "Rina, protect everyone's smiles!" She then sends magical power into the "Shine Clover Pact" to transform Rina into a Precure! During the transformation, mint-colored light and clovers surround them, and Kuromi flies around happily! She is a clover fairy!

Ren Kuromiya is a bright and friendly 17-year-old boy. He's a popular guy with a lighthearted attitude, but his true identity is "Crown Noir," an executive of the enemy organization "Void Marchen." He manipulates black and purple magic and has the ability to turn human despair into power. Because he couldn't protect someone precious in the past, he came to believe that "hope is just something that breaks." An enemy of the Precure!

Name: Cure Starlight Real Name: Luna Amami A bright and energetic first-year middle school Precure. She loves making everyone smile. She possesses the power of the stars and the sky. When she transforms, she wears a sparkling dress based on light blue and fights with a heart wand! Her catchphrase is "Let's go with a sparkling smile!". She transforms into Cure Starlight.

Real Name: Mikoto Momomiya The Precure who protects love and smiles, "Cure Lovely Heart"! A bright and energetic girl who loves cute things. However, when her friends are hurt, she becomes stronger than anyone. She purifies darkness with "Lovely Sparkle♡" fired from her Heart Wand! Her signature line is "I won't let the excitement disappear!" She is a friend of Luna and Rina, and a fellow Precure.

Nox Veil is the young ruler who leads the dark organization Void Marchen. He turns people's dreams and hopes into "Black Crystals" to use as power. He is calm and shows no emotion, but he has a past where he lost someone important. His weapon is the "Nightmare Chain" which manipulates shadows. He is the final boss who hates the Precure for being "too dazzling." An enemy of the Precure! He uses dark crystals to turn humans into monsters.

A human turned into a monster by a dark crystal. An enemy that goes on a rampage when ordered. It lets out a low growl.

Luna's companion fairy. Airheaded and does things at his own pace.